摘要:
The present invention relates to a structure for strain detection. This structure for strain detection is provided with a ceramic main body (12) which is attached to the detection target, in which strain is to be detected, and with a stress concentration area (14) which is formed in said main body (12) and which is destroyed when at least a prescribed strain is present. Defining the dimension of the entire main body (12) in one direction as Lm and the dimension of the stress concentration area (14) in that direction as Lc, it holds that Lc
摘要:
A method and a device for influencing the mechanical load-bearing capability and/or loading of a technical structure are described. The invention is distinguished by the following method steps: - detecting at least one loading-correlated characteristic of the structure, - determining a loading state of the structure on the basis of the at least one detected characteristic, - assessing the loading state of the structure and - generating at least one signal on the basis of the assessment of the loading state and on the basis of at least one target function, which is designed at least to optimize the lifetime of the structure, which signal is sent to at least one actuator, which is integrated within the structure or applied to the structure, to activate said actuator for influencing the loading state.
摘要:
Vacuum sensor application and method for firmly joining a sensor workpiece to a body component, where a) firstly, an adhesive layer which is provided by a cross-linked transfer contact adhesive is laminated to a sensor contact surface of the sensor workpiece, b) then, by using known radiation methods, the geometric patterns of a plurality of galleries to be arranged in a laminar fashion are transferred to the sensor contact surface by a light beam that penetrates the transfer contact adhesive, are subsequently introduced into the sensor workpiece and, in the process, are removed congruently with the structures of the adhesive layer introduced into the sensor workpiece, c) the adhesive-laminated patterned sensor contact surface is then arranged on a defined surface region of the body component surface, d) after that, a mechanical pressure is exerted on the two joint partners, with which the adhesive-laminated patterned sensor contact surface and the body component surface region (3) are pressed together.
摘要:
A crack-type fatigue detecting sensor comprises: a foil substrate having a first surface and a second surface fixed to a member to be tested; and a foil fracture piece having a slit formed in a central portion between opposite end portions in a longitudinal direction thereof such that the slit extends from one side portion toward the other side portion in a width direction thereof perpendicular to the longitudinal direction, wherein the opposite end portions of the fracture piece are respectively fixed to the first surface of the substrate and a portion including the central portion having the slit has a thickness smaller than a thickness of the opposite end portions over a whole width.
摘要:
A method for measurement of axial forces acting on a shaft (10), the faces of a portion (12) projecting from said shaft (10) being supplied with gas under overpressure such that gas pressure is built up between two opposing faces (16; 17) of said portion (12) projecting radially from the shaft (10) and at least one gas-permeable body (15) provided external to said faces (16; 17). A gas differential between the gas pressure on said opposing faces (16; 17) is established, and the axial force acting on said shaft is determined as k*ΔP, with k being a constant and ΔP being the pressure differential between the gas pressures on the two faces (16; 17). Means are provided for supply of gas under overpressure to said body (15), and pressure measuring means (18) are provided for measurement of the pressure differential between the pressures on the two faces (16; 17) of the radially projecting portion (12). The protruding portion (12) may also constitute a measuring plate which, provided in various manners, is subjected to forces.
摘要:
A material tester capable of presenting information enabling a user to easily determine whether or not a filtering condition is appropriate is provided. A personal computer (42), as functional blocks of a program installed in a memory (53), includes a filtering processing part (61) that eliminates noise from raw data acquired by digitalizing an input signal from a load cell or an extensometer, a filter setting part (62) that sets a filtering condition applied to the raw data in the filtering processing part (61), and a display control part (65) that displays the raw data and the processed data, for which the filtering process has been performed by the filtering processing part (61), at the same scale and in different forms on a display device (51) in an overlapping manner.
摘要:
A forming limit curve is obtained by subjecting a surface of a metal plate to be press-formed to marking at a distance between reference points of 0.5-1.0 mm, bulging the metal plate with a punch having a top minimum curvature radius of 3-10 mm and measuring principal maximum strain and principal minimum strain at a time of generating cracks on the surface of the metal plate at a top portion of the punch from a change of the marking, from which a forming limit diagram is prepared and a crack generation is predicted in the press forming based on the forming limit diagram, and then the press forming is conducted under conditions not causing crack generation.
摘要:
The present invention relates to a production method for producing a sensor film (1) for measuring cracks of a material surface using the comparative vacuum measurement method. A gallery (2) having a predetermined gallery course is milled along a surface of the sensor film (1) using a milling apparatus (3). The sensor film (1) comprises a plastic material.